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Summary of Contents for UNICORECOMM UM980
- Page 1 INSTALLATION AND OPERATION USER MANUAL WWW.UNICORECOMM.COM UM980 BDS/GPS/GLONASS/Galileo/QZSS All-constellation Multi-frequency Module High Precision RTK Positioning Copyright© 2009-2022, Unicore Communications, Inc. Data subject to change without notice.
- Page 2 Unicore holds the trademarks of “和芯星通”, “UNICORECOMM” and other trade name, trademark, icon, logo, brand name and/or service mark of Unicore products or their product serial referred to in this manual (collectively “Unicore Trademarks”).
- Page 3 UM980 User Manual Should you purchase our product and encounter any inconsistency, please contact us or our local authorized distributor for the most up-to-date version of this manual along with any addenda or corrigenda.
- Page 4 Foreword This document describes the information of the hardware, package, specification and the use of Unicore UM980 modules. Target Readers This document applies to technicians who possess the expertise on GNSS receivers.
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Page 5: Table Of Contents
UM980 User Manual Contents Introduction ....................1 Key Features ........................2 Key Specifications ......................2 Block Diagram ........................5 Hardware ....................6 Dimensions ........................6 Pin Definition ........................8 Electrical Specifications ....................12 2.3.1 Absolute Maximum Ratings ..................12 2.3.2 Operational Conditions ....................12 2.3.3 IO Threshold ....................... -
Page 6: Introduction
1 Introduction UM980 is a new generation of GNSS high precision RTK positioning module from Unicore. It supports all constellations and all frequencies, and can simultaneously track BDS B1I/B2I/B3I/B1C/B2a/B2b , GPS L1/L2/L5, GLONASS L1/L2, Galileo E1/E5a/E5b, QZSS L1/L2/L5, and SBAS. The module is mainly used in surveying and mapping, precise agriculture, UAVs, and autonomous robots. -
Page 7: Key Features
UM980 User Manual Key Features Based on the new generation GNSS SoC -NebulasⅣ , with RF-baseband and high precision algorithm integrated 17 mm 22 mm mm, surface-mount device × × Supports all-constellation all-frequency on-chip RTK positioning solution ... - Page 8 Performance Single Point Horizontal: 1.5 m Positioning Vertical: 2.5 m (RMS) Horizontal: 0.4 m Positioning Accuracy DGPS (RMS) Vertical: 0.8 m Horizontal: 0.8 cm + 1 ppm RTK (RMS) Vertical: 1.5 cm + 1 ppm Observation Accuracy (RMS) GLONASS Galileo B1I/B1C/L1C /L1 C/A/G1/E1 10 cm...
- Page 9 UM980 User Manual Warm Start < 20 s Hot Start < 5 s Initialization Time < 5 s (Typical) Initialization Reliability > 99.9% Data Update Rate 50 Hz Positioning Differential Data RTCM 3.X Data Format NMEA-0183, Unicore Physical Characteristics Package...
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Page 10: Block Diagram
RTK co-processor, which can fulfill the high precision baseband processing and RTK positioning independently. 1PPS UM980 outputs 1 PPS with adjustable pulse width and polarity. Event UM980 provides the Event Mark Input with adjustable frequency and polarity. UC-00-M32 EN R1.0 Introduction... -
Page 11: Hardware
UM980 User Manual Reset (RESET_N) Active LOW, and the active time should be no less than 5 ms. 2 Hardware Dimensions Table 2-1 Dimensions Symbol Min. (mm) Typ. (mm) Max. (mm) 21.80 22.00 22.50 16.80 17.00 17.50 2.40 2.60 2.80... - Page 12 Figure 2-1 UM980 Mechanical Dimensions UC-00-M32 EN R1.0 Hardware...
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Page 13: Pin Definition
UM980 User Manual Pin Definition TXD1 TXD2 RXD1 RXD2 Top View ERR_STAT RESET_N RTK_STAT PVT_STAT EVENT Figure 2-2 UM980 Pin Definition Table 2-2 Pin Description Description — Ground ANT_IN GNSS antenna signal input — Ground ANT_DETECT Antenna signal detection ANT_OFF Disable external LNA Detection of antenna short circuit;... - Page 14 Description VCC_RF External LNA power supply SPIS_CSN Chip select input of SPI slave SPIS_MOSI Data input of SPI slave SPIS_CLK Clock input of SPI slave SPIS_MISO Data output of SPI slave — Ground — Reserved — Ground — No internal connections —...
- Page 15 UM980 User Manual Description — No internal connections — No internal connections RXD2 COM2 receiving data, LVTTL level TXD2 COM2 transmitting data, LVTTL level Built-in function; recommended to add a through-hole testing point and a 10 kΩ pull- — up resistor; cannot connect ground or power...
- Page 16 Description — Ground — No internal connections — No internal connections — No internal connections — Ground TXD1 COM1 transmitting data, LVTTL level RXD1 COM1 receiving data, LVTTL level C data C clock — No internal connections — No internal connections —...
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Page 17: Electrical Specifications
UM980 User Manual Electrical Specifications 2.3.1 Absolute Maximum Ratings Table 2-3 Absolute Maximum Ratings Parameter Symbol Min. Max. Unit Power Supply Voltage -0.3 Input Voltage -0.3 GNSS Antenna Signal Input ANT_IN -0.3 ANT_IN input Antenna RF Input Power power External LNA Power Supply VCC_RF -0.3... -
Page 18: Io Threshold
3 Hardware Design Antenna Feed Design UM980 just supports feeding the antenna from the external of the module rather than from the internal. It is recommended to use devices with high power and that can withstand high voltage. Gas discharge tube, varistor, TVS tube and other high-power protective devices may also be used in the power supply circuit to further protect the module from lightning strike and surge. - Page 19 UM980 User Manual ANT_BIAS ANT_IN VCC_RF Figure 3-1 UM980 External Antenna Feed Reference Circuit Remarks: L1: feed inductor, 68 nH RF inductor in 0603 package is recommended C1: decoupling capacitor, recommended to connect two capacitors of 100 nF/100 pF in parallel ...
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Page 20: Grounding And Heat Dissipation
Grounding and Heat Dissipation Grounding and heat dissipation pad Figure 3-2 Grounding and Heat Dissipation Pad The 48 pads in the rectangle in Figure 3-2 are for grounding and heat dissipation. In the PCB design, it is recommended to connect them to a large sized ground to strengthen the heat dissipation. -
Page 21: Production Requirement
UM980 User Manual 4 Production Requirement Recommended soldering temperature curve is as follows: Figure 4-1 Soldering Temperature (Lead-free) Temperature Rising Stage Rising slope: Max. 3 ° C/s Rising temperature range: 50 ° C ~ 150 ° C Preheating Stage Preheating time: 60s ~ 120 s ... -
Page 22: Packaging
Figure 5-1 Label Description Product Packaging The UM980 module uses carrier tape and reel (suitable for mainstream surface mount devices), packaged in vacuum-sealed aluminum foil antistatic bags, with a desiccant inside to prevent moisture. When using reflow soldering process to solder modules, please strictly comply with IPC standard to conduct humidity control on the modules. - Page 23 UM980 User Manual Figure 5-2 UM980 Package Reel Feed Direction Cover Tape Carrier Tape Dimensions 0.35 1.75 0.10 20.20 0.10 40.40 0.10 330*180*44mm 2.00 0.10 17.8 0.10 1.50 + ∅ 0.00 ∅ +0.10 1.50 4.00 0.10 -0.00 10Po 40.00 0.20 44.00 0.30...
- Page 24 30% circle is lavender (see Figure 5-5), you must bake the module until it turns to blue. The UM980 is rated at MSL level 3. Refer to the relevant IPC/JEDEC J-STD-020 standards for the package and operation requirements. Users may access to the website www.jedec.org to get more information.
- Page 25 和芯星通科技（北京）有限公司 Unicore Communications, Inc. 北京市海淀区丰贤东路 7 号北斗星通大厦三层 F3, No.7, Fengxian East Road, Haidian, Beijing, P.R.China, 100094 www.unicorecomm.com Phone: 86-10-69939800 Fax: 86-10-69939888 info@unicorecomm.com...
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